{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{2}{c}}
\toprule
                    &\multicolumn{2}{c}{Complier}               \\\cmidrule(lr){2-3}
                    &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         \\
\midrule
SBD                 &      -0.686\sym{***}&                     \\
                    &     [0.032]         &                     \\
\addlinespace
DW                  &      -0.705\sym{***}&                     \\
                    &     [0.034]         &                     \\
\addlinespace
Homogeneous         &                     &      -0.689\sym{***}\\
                    &                     &     [0.039]         \\
\addlinespace
Mixed               &                     &      -0.711\sym{***}\\
                    &                     &     [0.039]         \\
\addlinespace
Constant            &       0.992\sym{***}&       0.989\sym{***}\\
                    &     [0.023]         &     [0.027]         \\
\midrule
Observations        &         799         &         546         \\
\bottomrule
\end{tabular}
}
